Control-head packer



Nov. 8, 1927.

E. v. claowELl.

CONTROL HEAD mossa I Filed oct. 2s. 1924 L/drauml/ `Paten-ted Nov. 8,1927.

UNITE-ov STATES PATENT OFFICE.

ERD V. CROWELL, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO THEGUIBERSON CORPORATION, 0F DALLAS, TEXAS, A CORPORATION 0F DELAWARE.

CONTROL-HEAD PACKER.

Application filed October 25, 1924.

This-invention relates to new and useful improvements in control headpackers.

The inventionhas particularly to do with improvements in the type ofdevices set forth in my former Patent-s No. 1,354,027 1ssued September28, 1920, and No`1,432,674 issued October 17th, 1922.

The object of the invention is to provide` a device provided with apacker element held under restraint While going into the well and alsoequipped with a flow controlling valve normally held open.

A- particular obfect of the invent-ion is to provide a valve of `thetelescoping type adapted to be closed and cut ofi' or modulate the flowwhen thepaclier is sealed.

A construction designed to carry out the invention will be hereinafterdescribed together with other features of theinvention.

The invention will be more readily understood from a reading of thefollowing specilication and by reference to the accompanying drawings,in which an example of the .invention is shown, and wherein:

Fig. 1 is a view, partly in vertical section and partly in elevation ofa device constructed in accordance with my invention, the parts being inthe position occupied when the device is being lowered into the well,

Fig. 2 is a similar view showing the position occupied by the devicewhcnthe same in anchored in the well,

Fig. 3 is an enlarged cross-sectional view on the line 3 3 of Fig. 2,and

Fig. 4 is a vertical sectional view of tho lower portion of the device.

In the drawings the numeral 10 designates the usual Well casingand 11the tubing, 'which constitutes a flow pipe or discharge tubing andextends vertically in the-well casing. The device is attached to thelower` end of the tubing. `Below the devicevis a string of tubing 12which constitutes a swinging anchor, or an intake for the oil.

The device consists -of an open ended cylindrical body 13 having areduction coupling 14 screwed onto its lower end. The coupling has aninternally screw threaded nipple 15 receiving the upper end of thetubing 12 and vis also provided with inlet ports 16. The upper end ofthe body is screwed into a collar 17. A rubber or simi- Serial No.745,770.

on i

body andcarrying slips 22 having serrated faces 2 3.. adapted forgripping engagement with the well casing. The slips'are carried by thecageso as to be free to swing outwardlyl under the action ol the conicalface Slip springs 24 are mounted upon the sllp cagel andenga-ge theslips and are adapted to frictionally engage the inner wall of the welleasing/.A hook 25 carried by the slip cage cooperates with a pin` 26carried by the body 13 to maintain the slips out of engagement with thewall of the Well casing when the pin is received in the bight 0f thehook.

The collar 17 extends above the upper end of the body 13 and receivesthe lower end of a tubular valve cage 27 which is cylindrical and hasupper and lower annular shoulders 28 and 29 respectively. The cage InFig. 1 I have shown the valve open and the device in the position inwhich it is inserted in the well. It will be seen that the slips 22 areheld below the conical'face 20 by the hook 25 and pin 26, while the slipsprings 24 ride down the casing wall. As the device is lowered gas mayenter the ports 16 and escape through the valve openings 30. l/Vhen thetubing, control head and packer are inthe desired position the tubing isrotated about 180 degrees thus turning the body 13 on which the pins 2Gare carried. This movement releases the pins 26 from the hooks 25,whereby the slip cage is released. In order to communicate rotary motionfrom the sleeve 33 to the cage 27 ,I

a radlal lug 36 is provided on the inner periphery of the valve ring 31so as to extend into one of the openings 30, but any other suitablemeans may be used.

This movement of the body 13 releases the pins 26 from the hooks 25,whereby the slip cage 21 is released. The slip .springs 24 whichfrictionally engage the wall of the casing 10, maintain the cage and thesli s stationary in said well casing, so that as t 1e lowering of thepacker continues, the conical face 20 expands theslips 22, and forcestheir serrated or toothed aces 23 into bindingengagement with the wellcasing, thus` anchoI'-, ing the whole device as and 12.

As the weight of the body 13 and tubing 12 settle upon the agency of thecollar 17, said sleeve is expanded and `seals the annular' space betweent-he packer and the casing, whereby the outlet of gas or oil isrestricted to the body 13. .IVhen the tubing 11 is lowered the sleeve 33is moved downward and the ring 31 slides down the cage 27, wherebyconnection with the casing is cut of through theopenings 30. The ring 31comes to-restfuponcthe shoulder 29, thus imposing additional weight uponthe collar 17,and vthe rubber sleeve 18. The flow is now confined to thebody 13, sleeve `33 and well as the tubing 11 y the vbodyfor tubing therubber sleeve 18 through tubing which occupy the position shown in I3ysuitably handling the tubing the .positlon of. the packer and controlhead may be varied and the compression chamber .below the packer, maythus be varied. It is obvious that yarious may be used in lieu of therubber sleeve 18.

Various changes in the size and shape ofr the different parts, as wellas modifications and alterations may Jbe made within the scope of theappendedclaim.

What I claim, is: In a control head packer, the combination of ahollowbody, a coupling at the bottom of and having a fluid admitting opening,a hook wall slip Vmounted von the body, a colnpressible packing collarsurrounding the body, a tubular valve cage mounted on the upper end ofthe body and vertical -fluid openings intermediate its ends, avalvesleeve telescoping over the cage and covering said openings, the sleevehaving a reduced neck for coupling to a tubing, an internal lug carriedby the sleeve and engaging in one of the: openings of the cage forrotating said cage and the body to set the hook wall slip. l

In testimony whereof I affix my .signature ERD V. CROWELL.-

forms 'of packing elements

